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Article – Journal of Advanced Chemical Sciences

Journal of Advanced Chemical Sciences, Volume 3,Issue 4,2017 Pages 515-520

Study on Ion Pair and Triple Ion Formation of an Ionic Liquid [(EMIM)(TOS)] in Different Solvents with the Manifestation of Solvation Consequence
Binoy Chandra Saha, Kanak Roy, Mahendra Nath Roy*

Solution behaviour of 1-ethyl-3-methyl imidazolium tosylate (IL) and some industrially important solvents (dimethylformamide, tetrahydrofuran and 1,4-dioxane) have been studied by electrolytic conductivity, density (ρ) and viscosity study. The limiting molar conductivities (Λ0), association constants (KA), and the distance of closest approach (R) of the ions have been measured using the Fuoss and Fuoss-Krass theory. The observed molar conductivities were explained by the formation of ion pairs and triple ions. Ion–solvent interactions have been interpreted in terms of apparent molar volumes and viscosity B-coefficients. Tetrabutylammonium tetraphenylborate [Bu4NBPh4] was measured as reference electrolyte to estimate the limiting ionic conductivity (λ0±) of the ions along with the numerical appraisal of ion-pair formation constant.
Keywords: Ionic Liquid; Dimethylformamide; Tetrahydrofuran; 1,4-Dioxane;